Qhov sib txawv ntawm 600 thiab 800 alloy

1. Tshuaj lom neeg sib xyaw

Cov tub ntxhais sib txawv nyob hauv lawv cov kev pleev pleev pleev, uas tsav lawv cov yam ntxwv tshwj xeeb:

Lub ntsiab	Alloy 600 (Raug, WT%)	Alloy 800 (raug, wt%)
Npib tsib caug (ni)	72.0% yam tsawg kawg nkaus (feem ntau yog 75-78%)	30.0–35.0%
Chromium (cr)	14.0–17.0%	19.0–23.0%
Hlau (FE)	6.0–10.0%	Sib npaug (≈40-45%)
Molybdenum (mo)	Tsawg dua los yog sib npaug rau 0.5%	Tsawg dua los yog sib npaug rau 0.75%
Carbon (c)	Tsawg dua los yog sib npaug rau 0.15%	Tsawg dua los yog sib npaug rau 0.10%
Aluminium (AL)	Tsawg dua los yog sib npaug rau 0.3%	0.15–0.60%
Titanium (ti)	Tsawg dua los yog sib npaug rau 0.5%	0.15–0.60%
Tooj Liab (Cu)	Tsawg dua los yog sib npaug rau 0.5%	Tsawg dua los yog sib npaug rau 0.75%

Tseem ceeb tshaj plaws: Alloy 600 yog aHigh-nickel alloy(Ntau dua los yog sib npaug rau 72% ni), thaum alloy 800 muaj qhov sib npaug ntawm npib tsib xee-hlau-chromium muaj pes tsawg leeg (≈30-35% ni, nrog hlau raws li qhov sib npaug). Qhov sib txawv no inspins lawv qhov kev ua tau divergent hauv kev xeb thiab cov xwm txheej kub siab.

2. Corrosion Kuj

Alloy 600:
Nws cov ntsiab lus npib tsib xee kho kom muaj kev zam rautxo qhov chaw(piv txwv li, hydrogen, sulfuric acid ntawm mainrate ntau) thiabAlkaline Corrosion(xws li, caustic daws). Nws tseem tiv taus Chloride Kev ntxhov siab corrosion cracking (SCC) zoo dua li ntau cov hlau-raws li cov dej khov (piv txwv li, nuclear reactor coolant tshuab). Txawm li cas los xij, nws tsis tshua muaj kev tiv tausoxidizing ib puag ncig(piv txwv li, huab cua kub) piv rau Alloy 800 vim yog qis chromium.

Alloy 800:
Nrog cov chromium siab dua (19-23%), nws muaj kev tiv thaiv zoo dua rauoxidizing ib puag ncig, suav nrog huab cua kub siab, chav, thiab oxidizing acids (piv txwv li, nitric acid). Nws kuj tseem tiv thaiv carburization, nitridation, thiab sulfidation ntawm ntug dej kub. Thaum nws ua haujlwm General Corrosion zoo, nws cov ntsiab lus ntawm ob npib tsib qis dua ua rau nws tsis tshua tiv taus chloside scc thiab alkaline corrosion dua alloy 600.

3. Kev ua haujlwm siab kub

Alloy 600:
Saib xyuas cov kws kho tshuab zoo zog thiab kev ruaj khov ntawm qhov kub thiab txias txog ~ 980℃(1,800℃f). Nws cov ntsiab lus nickel siab minimizes kev nthuav dav hluav taws xob thiab txhim kho cov npliag ntaub ntawv hauv kev siv tshav kub ntev. Nws yog tshwj xeeb yog tus muaj nuj nqis rau nws lub peev xwm los watchCT Cyclic Thermal Kev Nyuaj Siab tsis muaj embrittlement.

Alloy 800:
Ua tau zoo ntawm qhov kub zoo sib xws (txog ~ 1,000℃/ 1,832 Qib F) tab sis yog qhov zoo rauoxidation tsis kamNyob rau hauv tas mus li-cua sov raug (piv txwv li, cua sov ua ntu). Nws aluminium thiab titanium ntxiv (0.15-0.60 txhua) Daim ntawv tiv thaiv oxide txheej, txhim kho kev ruaj khov hauv qhov kub-oxidizing cua. Nws tseem ua pov thawj zoo dua li alloy 600 ntawm qhov kub tshaj 800℃vim muaj kev txhawb zog los ntawm Al thiab ti.

4. Cov Khoom Siv Neeg Kho Tshuab

Ntiag tug	Alloy 600 (Annealed)	Alloy 800 (Annealed)
Lub zog tensile	~ 550-690 MPA	~ 550-690 MPA
Paib lub zog	~ 205-310 MPa	~ 205-310 MPa
Elongation	~30–40%	~30–40%
Cov quav	Zoo txog 980 degree	Superior at >800℃(vim al / ti)
Thermal nthuav dav	Qis dua (13.1 × 10⁻⁶ / degree, 20-100 degree)	Ntau dua (15.8 × 10⁻⁶ / degree, 20-100 degree)

Alloy 800 txoj kev nthuav dav ntau dua tuaj yeem ua rau muaj kev ntxhov siab ntau dua hauv kev caij tsheb kauj vab ntau dua hauv kev caij sov siab, tab sis nws cov creep tsis kub (saum 800 degree) feem ntau zoo dua.

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5. Kev thov

Alloy 600:
Dominates nyob rau hauv cov ntawv thov uas yuav tsum muaj npib siab thiab tiv taus txo / alkaline ib puag ncig, xws li:

Cov nroj tsuag hluav taws xob nuclear (cov tshuaj tua kab, chav tsim hluav taws xob, cov kav dej khov).

Tshuaj lom neeg (xuas tes ua cov kev daws teeb meem, ib puag ncig hydrogen-nplua nuj).

Aerospace Cheebtsam (Dav hlau cav qhov chaw raug txo cov roj).

Alloy 800:
Nyiam rau oxidizing high-kub ib puag ncig, suav nrog:

Kev sib xyaw ua kom haum (raj radiant, cua sov hais).

Petrochemical thiab cov khoom siv hluav taws xob (cov khoom siv hluav taws xob (kev hloov cua sov, cov tub ceev ntxiv).

Lub hwj chim ntau tiam (boiler leeg, chav tsev superheaters).

Muaj oov thiab thermal ua tshuab.

6. Fabrication thiab Weldability

Ob alloys yog Austenitic thiab weldable siv cov txheej txheem zoo li TIG (GTAW) lossis MIG (GMAW), tab sis:

Alloy 600 yuav xav tau kev kho cua sov tom qab weld (duab) kom txo cov kev txhawj xeeb uas muaj kev ntxhov siab thiab tiv thaiv cov ntawv thov tseem ceeb.

Alloy 800 tus txhuas thiab cov ntsiab lus titanium thiab titthatallic theem yog tias overheated thaum tshav sov yog qhov tseem ceeb.

Alloy 600 yog cov Nickel alloy optimized rau kev txo qhov chaw, thaum alkaline corrosion, thiab high-high-kub ruaj khov nyob rau hauv oxidizing cov xwm txheej. Lawv cov divergent muaj pes tsawg leeg ua rau lawv haum rau cov nyom kev sib txawv.